The $22 iPhone X Battery Case ─ TechSmartt

I’ve been looking for an Apple iPhone X battery case that’s Apple official or from Mophie but nothing yet… So I jumped over to Amazon and found a $22 battery case as well as one that has a 4,200mAh battery with wireless Qi-charging! All of these are on Amazon Prime right now…but do these suck since they’re not legit?